Leather-cutting machine.



' J. A. ADAM.

LEATHER CUTTING MACHINE.

APPLICATION FILED MAY19, 1913.

Patented June 23, 1914.

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COLUMBIA PLANDORAPH CO., WASHINGTON. D. C.

'J. A. ADAM.

LEATHER CUTTING MACHINE.

APPLICATION FILED MAY 19, 1913.

Patented-June 23, 1914L 2 SHEETS-snm.' 2.

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COLUMBIA PLANUGRAPH c0.,wAsHxNnToN. D. c.

JOHN ANDREW ADAM, OF MONTREAL, QUEBEC, CANADA.

LEATHER-CUTTING- MACHINE.

Specification of Letters Patent.

Patented June 23, 1914.

Application filed May 19,1913. Serial No. 768,495.

To all whom 'it may concern.'

Be it known that I, JOHN ANDREW ADAM, a subject of the King of Great Britain, and resident of 543 Desjardins street, in the city and district of Montreal, Province of Quebec, in the Dominion of Canada, have invented certain new and useful Improvements in Leather-Cutting Machines; and I do hereby declare that the following is a full, clear, and exact description of the same.

The invention relates to improvements in leather cutting machines as described in the present specification and illustrated in the accompanying drawings that form part of the same.

The invention consists essentiallyl of thc novel means employed for transporting and cutting shapes out of a skin coincidentlyv with the travel of said skin.

The objects of the invention are to facili# ing a preferable form of roller over whichy the impression of the die is made in the skin. Fig. 3 is an enlarged perspective detail of one of the loose transporting rollers. Fig. 4 is an end elevation of the machine. Fig. 5 is an enlarged perspective detail of a die. Fig. 6 is a perspective detail of a driven transporting roller.

Like numerals of reference indicate corresponding parts in each gure.

Referring to the drawings, 1 and 2 are the end standards of the machine supporting table 3, having central bearing slots 4 and the bearing slots 5, the latter being on the under side of the overhang of each standard at the front of the machine.

6 and 7 are the tops of the machine suitably secured to the standards 1 and 2 and having the bearing slots 8, 9 and 10 and the web extensions therebetween, joining said tops and forming the guides 11, 12, 13 and 14, said guides being parallel with the table 3.

15 are loose rollers journaled in bearings in the standards l and 2 and extending through corresponding longitudinal slots in the table 3 thereby facilitating the passage of the skin over said table.

16 is a feed roller journaled in the front overhang of the standards and extending upwardly through corresponding longitudinal slots in the table 3 the shaft of said rollers 16 projecting outwardly at one end and carrying thereon the gear wheel 17 v 18 are bearings sliding vertically in slots 19 in the front ends of the tops 6 and 7 and having the set screws 20 extending upwardly therefrom through the caps 21, said screws being squared at the top ends for facilitating the adjustment of said bearings.

22 is a feed roller coacting with the feed roller 16 and journaled in the bearings 18, the shaft of said feed roller extending outwardly at one end and carrying the gear wheel 23, the latter coacting with the gear wheel 17.

24 is a sprocket wheel mounted on the shaft of the feed roller 16 for driving purposes.

25 are bearings vertically sliding in the slots 5 and having set screws 26 extending through the caps 27, the latter closing the end of the slots 5, said screws being squared at the outer ends to facilitate the adjustment of said bearings 25.

28 is a roller having a plurality of picks 29 projecting therefrom, said picks being in any suitable form so as to make a rough prickly surface on said roller to facilitate the transportation of the skin fed in through the feed rollers 16 and 22. Roller 28 projects upwardly through a corresponding 1ongitudinal slot in the table 3 and is driven by the sprocket 30 mounted on the shaft of said roller.

31 are bearings sliding vertically in the slots 10, having set screws 32 projecting upwardly therefrom through the caps 33 and squared at their top ends, said bearings being locked in position by the jam nuts 34. 35 is a roller, preferably of rubber, and journaled in the bearings 31, is the shaft of said roller carrying the sprocket 36, one end thereof being suitably driven. 37 are similar bearings in the slots 9, and 38 are similar bearings in the slots 8.

39 is a roller journaled in the bearings 37, preferably formed of hard rubber, and being the main compression rollerl engaging the dies as they pass through and performing the cutting by pressure.

40 is a sprocket mounted on the Vshaft of the means of driving Vthese rollers is only the roller 39 and driving said roller.

y 4l is a rollel1 journaled in the bearings 38, shaft of said roller 4l carrying atl one end sprocket 42 joined tothe sprocket 43 on the shaft of the main roller 39; and also connected outwardly to the sprocket 36 on the shaft of the roller 35, shaft of the roller 28 also 'being operatively connected Ito the sprocket -24on fthe feed roller "shaft 16,and this feed; rollershaft operatively connected tothe feed@ roller shaft 22 by the gears 1.7 and'23.

44 are bearings vertically sliding in the j slots 4 having set screws 45 at one end eX- Atending through the bottoms of the slots 4 and the other end through 'the caps 46, :both "ends ybeing locked by the jam nuts 47.

48 is a roller preferably 'made in sections 49 yof. brass facings readily removed Vand liturned up, though this roller` may -be made inany suitable way. 50 is asprocket `mount- .ed on the shaft of said roller 48 and operaitively connected to the sprocket 40;

5l is a sprocket on the shaft of ithe roller 41 operatively connected to the .sprocket 30 driving the rollerv 28.

=52 is a driving pulley mounted on the shaft Aof the roller 48.

53 is a sample of die used in the'operation of the machine.

ln the operation of this machine, -leather vis fed iin through said feed rollers and as it reaches the prickly roller it is further carried on. In the meantime dies have been :set over its surface by an attendant accusrtomedrto such work and the dies are carried :fon under the guides 14, then over the loose 'rollers and under the roller 35, then funder the roller 39 Where the pressure is 'made in passing over the roller 48 and the required -cut made lin lthe leather. Meantime lthe dies lpass lunder vthe guide 13 'and after cutting pass under the guide V12 dand the roller 4l and under the guide 11 and out, Awhen vthe dies yare removed and the shapes suitablyg journaled in upper adjustable fbearings,

The=upper :rollers are preferably of-rubber though they may be of any ysuitable mate-. rial. Same may be said as regards the loosej gathered.

rollers and it is a distinct advantage `to have one froller of prickly material so that the work of the feed rollers is facilitatedimmel diately the skin reaches the said prickly roller.

The construction of the brass roller hasdescribed ,herein in order to complete the invention, for any belt, gear or chain and sprocket mechanism may be used, Such d e.

tails are left entirely to the mechanical skill vof I'the Ibuilder, and it is only with this novel means of cutting shapes out of leather that this invention has to do, and therefore such changes :mayf'be finade as comeV within the Ascope of :the claims @for novelty following.

What I claim is 21. A leather `cutting mac'hine Ycomprising an upper .pressure roller, .a flower .impression roller, bearings adjustably :supporti-ng r'said rollers', means for :carrying the leather be'- Jtween and :through .=said frollers, fmeans for advancing fthe dies on said fleatherito said `rollers, fand means :for carryingsaid dies fon-wardly beyond jsaid rollers.

2. In=a machine of the class described, 1in combination, a frame, adjustable bearingsl in the upper and lower portions of said iframe, a pressure roller journaled in upper adjustable fbearings, :an impression roller j ournaled in lower tadj ustable bearings, feed arollers,-one of said feed rollers being Yjournaled in .adjustable bearings, Ia receiving roller 'between said feed rollers and said pressure froller,:a delivery roller beyond said ,pressure .roller, said receiving iroller'and said delivery :roller being ournaled in adjustable :bearings .and Ainea-ns for driving ssaid irollers.

3. In a machinefo'ftheclass described, in combination, :a frame, adjustable ihearings in the upperand lower portions of said frame, a lpressure roller .in upper adjustable 4bearings, an impression roller in lower adjust.- `able lbearings, lfeed rollers `at the front of said frame, a `prickly ftransporting :roller be-v ltween Asaid feed Vrollers `and ksaid Apressure -roller and ournaled in lower adjustable bearings, loose irollers journaled insaidebear- -ings vin said iframe, ,receiving and delivery rollers coacting with said loose srolslers and THOMAS DORIAN, d. 'Mo'GrnE.

l'Copies of this patent may be obtained for ve cents each, by addressing lthe Commissioner'of Patents,

`Washington, 1). .0. 

